/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshMaterialFunctions.h
Populates Triangle ID List with the Triangle IDs of triangles that share the specified Material ID in the Target Mesh.
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * GetTrianglesByMaterialID ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, int MaterialID, [FGeometryScriptIndexList](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptIndexList) & TriangleIDList, [UGeometryScriptDebug](API\Plugins\GeometryScriptingCore\GeometryScript\UGeometryScriptDebug) * Debug )